[AMRadio] 1/4 in shaft insulators

[Tim O. Brown]

Hey John,
	How's everthing?

Tim and Kass

-----Original Message-----
From: John E. Coleman [mailto:colemanj at sbcglobal.net] 
Sent: Monday, May 26, 2003 9:45 AM
To: amradio at mailman.qth.net
Subject: RE: [AMRadio] 1/4 in shaft insulators

Thanks Don and Bob:	

	I think Don is referring to the resin not the construction but
the layered stuff that Bob is describing is what I was looking for and
is normally referred to as Phenolic insulator.  The cloth adds strength
to the device the same way fiberglass adds strength to the polyethylene
resins.  What little research I've done since Don's message, shows that
Phenolic is a word used to describe the compound made from carbolic acid
and formaldehyde which was discovered by Dr. Leo Baekeland.  I wonder if
we could make our own.  (Using http://www.hotbot.com, search on
BAKELITE.  Then ignore all the jewelry stuff and find the history
stuff.)   

Thanks to all, John, WA5BXO

-----Original Message-----
From: rbethman at comcast.net [mailto:rbethman at comcast.net] 
Sent: Monday, May 26, 2003 7:21 AM
To: amradio at mailman.qth.net
Cc: k4kyv at hotmail.com; colemanj at sbcglobal.net
Subject: Re: [AMRadio] 1/4 in shaft insulators

Gentlemen:

    Phenolic and Bakelite ARE NOT the same.

    Phenolic is laters of resin impregnated cloth bonded by resin 
throughout and under pressure.

    Bakelite has NO cloth or other fiber in it.

Bob N0DGN



Donald Chester wrote:

>
>> By the way were does one find the stuff that is used in the middle of

>> a lot of bug catcher antennas (I think it is called phenolic)
>
>
> John,
>
> Phenolic is the same stuff as Bakelite.  "Bakelite" is a brand name.
>
> Don K4KYV
>





_______________________________________________
AMRadio mailing list
AMRadio at mailman.qth.net
http://mailman.qth.net/mailman/listinfo/amradio